| /* |
| * Copyright (C) 2015-2018 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #import "config.h" |
| #import "HangDetectionDisabler.h" |
| |
| #if PLATFORM(MAC) |
| |
| #import <pal/spi/cg/CoreGraphicsSPI.h> |
| #import <wtf/ProcessPrivilege.h> |
| #import <wtf/RetainPtr.h> |
| |
| namespace WebKit { |
| |
| static const auto clientsMayIgnoreEventsKey = CFSTR("ClientMayIgnoreEvents"); |
| |
| static bool clientsMayIgnoreEvents() |
| { |
| CFTypeRef valuePtr; |
| if (CGSCopyConnectionProperty(CGSMainConnectionID(), CGSMainConnectionID(), clientsMayIgnoreEventsKey, &valuePtr) != kCGErrorSuccess) |
| return false; |
| |
| return adoptCF(valuePtr) == kCFBooleanTrue; |
| } |
| |
| static void setClientsMayIgnoreEvents(bool clientsMayIgnoreEvents) |
| { |
| auto cgsId = CGSMainConnectionID(); |
| |
| // In macOS 10.14 and later, the WebContent process does not have access to the WindowServer. |
| // In this case, there will be no valid WindowServer main connection. |
| if (!cgsId) |
| return; |
| // FIXME: <https://webkit.org/b/184484> We should assert here if this is being called from |
| // the WebContent process. |
| |
| if (CGSSetConnectionProperty(cgsId, cgsId, clientsMayIgnoreEventsKey, clientsMayIgnoreEvents ? kCFBooleanTrue : kCFBooleanFalse) != kCGErrorSuccess) |
| ASSERT_NOT_REACHED(); |
| } |
| |
| HangDetectionDisabler::HangDetectionDisabler() |
| : m_clientsMayIgnoreEvents(clientsMayIgnoreEvents()) |
| { |
| setClientsMayIgnoreEvents(true); |
| } |
| |
| HangDetectionDisabler::~HangDetectionDisabler() |
| { |
| setClientsMayIgnoreEvents(m_clientsMayIgnoreEvents); |
| } |
| |
| } |
| |
| #endif |